Stock of a firearm



FIG. 1 is a perspective view of a stock of a firearm according to thedisclosure;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The broken lines are for purposes of illustration only and do not form apart of the claimed design.

CLAIM We claim the ornamental design for a stock of a firearm, as shownand described.